The Printed Broadband Dividing-Summating Architecture for Multi-Port Amplifers to Excite the S–Band Log–Periodic Satellite Antennas

This article deals with the systematic approach based on two following topics. The first one describes the newly proposed S-band 8x8 dividing-summating architecture employing the asymmetric two-section backward-wave strip-line directional couplers. The corresponding network is manufactured by using the standard two-layer printed circuit board technology. The variety of the insertion losses through the any channels is less than 0.8 dB whereas the phase difference through those is less than 15 degrees. This circuit was successfully used to excite the novel printed log-periodic satellite antenna that was realized on a base of the array of the various center-end-fed dipole-like radiators proposed earlier in Russian Patent no. 2571156, date of Patent Dec. 20, 2015. The detailed design procedure of this log-periodic aerial relates to the second topic. In addition, the results of computer modeling by using the “CST Studio Suite” solver are presented and discussed in details. Both the proposed printed circuit units are the good candidates for next generation of the microwave satellite communications.